A Study to Observe Real-world Evidence of Guselkumab Treatment in Participants With Ulcerative Colitis and Crohn's Disease in the United Kingdom (UK)
GUSTO-UK
Real World Observation of Guselkumab Treatment in Patients With Ulcerative Colitis and Crohn's Disease - a Study of Treatment Outcomes in the UK
1 other identifier
observational
220
1 country
1
Brief Summary
The purpose of this study is to evaluate the clinical effectiveness (how well the treatment works) of Guselkumab, by lines of treatment and subpopulations, and what are the outcomes of treatment (clinical outcomes) in adult participants with moderately to severely active Ulcerative Colitis (UC) or Crohn's Disease (CD) under real-world settings. CD and UC are the main type of Inflammatory bowel disease, a group of inflammatory conditions of the colon and small intestine.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Nov 2025
Typical duration for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
November 17, 2025
CompletedStudy Start
First participant enrolled
November 17, 2025
CompletedFirst Posted
Study publicly available on registry
November 21, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 5, 2029
ExpectedStudy Completion
Last participant's last visit for all outcomes
March 17, 2029
June 5, 2026
June 1, 2026
3.3 years
November 17, 2025
June 4, 2026
Conditions
Outcome Measures
Primary Outcomes (10)
Number of Participants Achieving Clinical Remission for Crohn's Disease (CD) as Measured by Harvey-Bradshaw Index (HBI)
HBI score is used to assess disease severity and treatment effectiveness. The HBI consists of a 5-part questionnaire, assessing general wellbeing, abdominal pain, number of liquid stools per day, abdominal mass and complications. Clinical remission for CD is defined as the HBI score less than or equal to (\<=) 4.
Up to Week 96
Number of Participants Achieving Clinical Remission for Ulcerative Colitis (UC) as Measured by Partial Mayo Score (PMS)
Mayo scoring system is used to assess disease severity and treatment effectiveness. Clinical remission for UC is defined as the PMS score \<=2 and a rectal bleeding subscore of 0.
Up to Week 96
Number of Participants Achieving Clinical Response for CD as Measured by HBI
HBI score is used to assess disease severity and treatment effectiveness. The HBI consists of a 5-part questionnaire, assessing general wellbeing, abdominal pain, number of liquid stools per day, abdominal mass and complications. Clinical response for CD is defined as the HBI score less than or equal to (\<=) 4 or a decrease by greater than or equal to (\>=) 3.
Up to Week 96
Number of Participants Achieving Clinical Response for UC as Measured by PMS
Mayo scoring system is used to assess disease severity and treatment effectiveness. Clinical response for UC is defined as the PMS \<4 or \>=30 percent (%) reduction of baseline PMS.
Up to Week 96
Number of Participants Achieving Corticosteroid-free Remission for CD as Measured by HBI
Corticosteroid-free remission for CD is defined as no use of steroids for at least 30 days and HBI score \<=4. HBI score is used to assess disease severity and treatment effectiveness.
Up to Week 96
Number of Participants Achieving Corticosteroid-free Remission for UC as Measured by PMS
Corticosteroid-free clinical remission for UC is defined as no use of steroids for at least 30 days and PMS \<2 and a rectal bleeding subscore of 0. Mayo scoring system is used to assess disease severity and treatment effectiveness.
Up to Week 96
Number of Participants Achieving Corticosteroid-free Clinical Response for CD as Measured by HBI
Corticosteroid-free clinical response for CD is defined as no use of steroids for at least 30 days and a reduction in HBI score by \>=3 points from baseline or achieving HBI score \<=4. HBI score is used to assess disease severity and treatment effectiveness.
Up to Week 96
Number of Participants Achieving Corticosteroid-free Clinical Response for UC as Measured by PMS
Corticosteroid-free clinical response for UC is defined as no use of steroids for at least 30 days and PMS \<4 or \>=30% reduction from baseline. Mayo scoring system is used to assess disease severity and treatment effectiveness.
Up to Week 96
Number of Participants Achieving Patient-Reported Outcome (PRO)-2 Corticosteroid-Free Remission for CD as Measured by HBI
Participants with corticosteroid-free remission by PRO-2 will be assessed. An abdominal pain (AP) score \<=1 and a mean stool frequency (SF) score \<=3 and no worsening of AP or SF compared with baseline and no use of corticosteroids for at least 30 days will be defined as a PRO-2 corticosteroid-free remission.
Up to Week 96
Number of Participants Achieving PRO-2 Corticosteroid-Free Remission for UC as Measured by PMS
Participants with corticosteroid-free remission by PRO-2 will be assessed. An SF score of 0 or 1, where it has not increased from baseline, and a rectal bleeding score of 0 with no use of corticosteroids for at least 30 days will be defined as a corticosteroid-free PRO-2 remission.
Up to Week 96
Secondary Outcomes (41)
Number of Participants with Early Responses to Guselkumab Measured Using PRO-2 Components for UC
Baseline (at Week 0), Weeks 1, 2, 4, 8, 12
Number of Participants with Early Responses to Guselkumab Measured Using PRO-2 Components for CD
Baseline (at Week 0), Weeks 1, 2, 4, 8, 12
Number of Participants with Early Responses to Guselkumab Measured Using Bowel Urgency
Baseline (at Week 0), Weeks 1, 2, 4, 8, 12
Time to Guselkumab Persistence
Up to Week 96
Characteristics of Participants Receiving Guselkumab Treatment: Age
At Baseline
- +36 more secondary outcomes
Study Arms (1)
Group 1: Moderate-to-Severe Ulcerative Colitis (UC) or Crohn's Disease (CD)
Participants with confirmed diagnosis of moderate-to-severe UC or CD treated with guselkumab as per standard clinical practice will be enrolled. No drug will be provided as part of this study. Only data available from standard clinical practice and medical records will be collected.
Eligibility Criteria
The study population will include participants with confirmed diagnosis of moderate-to-severe Crohn's disease (CD) or Ulcerative colitis (UC) disease.
You may qualify if:
- Must be eligible for biologic treatment and initiate guselkumab according to the approved indications as described in the current version of the summary of product characteristics (SmPC) of the drug. Decision to prescribe must solely be made by the treating physician in line with the Trust's/ Health Board's treatment guidance. Enrolment must take place before or at the day of first administration (but after treatment decision by physician)
- Must have a confirmed diagnosis of moderate-to-severe Crohn's Disease (CD) or Ulcerative Colitis (UC) recorded in their medical records
- Must sign a informed consent form (ICF) allowing source data verification in accordance with local requirements
You may not qualify if:
- Contraindicated to guselkumab per the label
- Is currently enrolled in an interventional clinical study
- Has been previously exposed to interleukin (IL)-23 inhibitors, including Tremfya® (guselkumab), Skyrizi ® (risankizumab) and Omvoh® (mirikizumab). As an exception, participants with history of ustekinumab exposure, may be included
- Has a history of more than 4 lines of advanced inflammatory bowel disease (IBD) therapy (biologics and /or small molecules)
- Is unable to provide informed consent
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
London North West University Healthcare NHS Trust
Harrow, HA1 3UJ, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Janssen-Cilag Limited Clinical Trial
Janssen-Cilag Limited
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 17, 2025
First Posted
November 21, 2025
Study Start
November 17, 2025
Primary Completion (Estimated)
March 5, 2029
Study Completion (Estimated)
March 17, 2029
Last Updated
June 5, 2026
Record last verified: 2026-06
Data Sharing
- IPD Sharing
- Will not share